Introduction
Easy Custard Yogurt Cake Squares are the kind of homemade dessert that looks impressive while using simple everyday ingredients. The cake bakes into a soft, golden base with a beautifully creamy, custard-like center and a delicate top that becomes lightly browned around the edges.
A generous dusting of powdered sugar gives the finished cake the classic bakery-style appearance shown in the photo. Once cooled and sliced into squares, the interior stays soft, moist, and almost pudding-like while the outside develops a slightly firmer golden crust.
This is a wonderful dessert for afternoon coffee, family gatherings, brunch, holidays, or whenever you want something sweet without preparing complicated layers or frosting.
Why You Will Love This Recipe
The batter comes together in one bowl using inexpensive pantry ingredients. There is no complicated decorating, filling, or special equipment required.
Greek yogurt gives the cake its creamy texture and subtle tang, while eggs create the custard-like structure.
The recipe is also versatile. You can flavor it with vanilla, lemon, orange, or almond extract and serve it plain or topped with fresh fruit.
Most importantly, the cake tastes wonderful both slightly warm and completely chilled.
Recipe Information
Prep Time: 15 minutes
Bake Time: 35–45 minutes
Cooling Time: 30 minutes
Total Time: About 1 hour 30 minutes
Servings: 12–16 squares
Difficulty: Easy
Main Ingredients
Greek yogurt: The key ingredient for the soft, creamy interior. Full-fat yogurt produces the richest texture.
Eggs: Eggs provide structure while helping create the custard-like consistency.
Sugar: Sweetens the cake and contributes to its golden surface.
Cornstarch: Helps the yogurt and eggs set into a tender cake without making it heavy.
Vanilla: Gives the simple batter a warm dessert flavor.
Powdered sugar: A generous dusting creates the attractive snowy finish.
Ingredients
4 large eggs
¾ cup granulated sugar
2 cups plain Greek yogurt
⅓ cup cornstarch
1 teaspoon vanilla extract
1 teaspoon lemon zest, optional
¼ teaspoon salt
1 teaspoon baking powder
2 tablespoons melted butter
Powdered sugar for finishing
How to Choose the Best Ingredients
Use thick plain Greek yogurt rather than thin regular yogurt. Excess liquid can make the cake difficult to set properly.
Full-fat Greek yogurt gives the richest flavor and smoothest consistency, although reduced-fat yogurt can also work.
Use large eggs at room temperature. They blend more easily into the yogurt mixture and create a smoother batter.
Fresh cornstarch is important because it provides much of the structure in this flour-light dessert.
Pure vanilla extract is enough for a classic version, but fresh lemon zest adds a refreshing flavor that pairs beautifully with yogurt.
Prepare the Baking Pan
Preheat the oven to 350°F (175°C).
Line an 8-inch or 9-inch square baking pan with parchment paper, leaving enough paper around the sides to help lift the finished cake from the pan.
Lightly grease the parchment paper.
This cake is very soft while warm, so parchment makes removal much easier.
Prepare the Batter
Crack the eggs into a large mixing bowl.
Add the granulated sugar and whisk for approximately 1–2 minutes until the mixture becomes lighter and slightly foamy.
Add the Greek yogurt, vanilla extract, melted butter, and optional lemon zest.
Whisk gently until completely smooth.
In a separate small bowl, combine the cornstarch, baking powder, and salt.
Sift the dry ingredients into the yogurt mixture to prevent lumps.
Whisk just until the batter becomes smooth and creamy.
The finished batter should be thick but pourable, similar to a loose custard.
Step-by-Step Instructions
Preheat the oven to 350°F (175°C).
Line a square baking pan with parchment paper and lightly grease it.
Add the eggs and granulated sugar to a large bowl.
Whisk until pale and slightly foamy.
Add the Greek yogurt.
Pour in the melted butter and vanilla extract.
Add lemon zest if using.
Whisk until the mixture is smooth.
Combine the cornstarch, baking powder, and salt separately.
Sift the dry mixture into the wet ingredients.
Fold or whisk gently until no visible lumps remain.
Pour the thick batter into the prepared baking pan.
Smooth the surface with a spatula.
Bake for approximately 35–45 minutes.
The edges should become golden while the center remains slightly soft.
Remove from the oven and allow the cake to cool completely in the pan.
Lift it carefully using the parchment paper.
Cut into 12–16 squares.
Dust generously with powdered sugar immediately before serving.
Tips for Best Results
Do not overbake the cake. The center can still have a slight wobble when it comes out of the oven because it will continue setting as it cools.
Use thick yogurt. If your yogurt contains noticeable liquid, strain it before measuring.
Sifting the cornstarch prevents unpleasant lumps in the creamy center.
Allow the cake to cool before slicing. Cutting it while very hot can cause the soft interior to collapse.
For especially neat squares, refrigerate the completely cooled cake for approximately 1 hour before cutting.
Dust with powdered sugar shortly before serving rather than immediately after baking. Powdered sugar gradually absorbs moisture from the cake.
Flavor Variations
For Lemon Yogurt Cake, add 1 tablespoon of finely grated lemon zest and a teaspoon of fresh lemon juice.
For Orange Custard Cake, replace the lemon zest with fresh orange zest.
For Vanilla Bean Cake, add vanilla bean paste instead of regular vanilla extract.
For Berry Yogurt Cake, scatter blueberries or raspberries over the batter before baking.
For Almond Yogurt Cake, add ½ teaspoon almond extract and sprinkle sliced almonds over the top.
For a richer version, replace part of the Greek yogurt with softened cream cheese.
How to Serve
These cake squares are delicious at room temperature, but chilling them creates an even firmer and creamier texture.
Dust generously with powdered sugar and serve them simply, as shown in the photo.
For a more elaborate dessert, add strawberries, raspberries, blueberries, or sliced peaches.
A spoonful of whipped cream also works beautifully.
The subtle sweetness makes this cake particularly good with coffee or tea.
Meal Prep and Storage
Because this recipe contains a large amount of yogurt and eggs, store leftovers covered in the refrigerator.
The cake keeps well for approximately 3–4 days.
Place the squares in an airtight container or cover the baking dish tightly.
You can serve leftovers directly from the refrigerator for a cheesecake-like texture or allow individual pieces to stand at room temperature briefly before serving.
Common Mistakes to Avoid
Avoid using watery yogurt because excess moisture can prevent the center from setting correctly.
Do not add too much cornstarch. The goal is a creamy, tender cake rather than a dry traditional sponge cake.
Do not aggressively beat the batter after adding the cornstarch.
Avoid baking until the entire cake feels completely firm. That can produce a dry or rubbery texture.
Most importantly, allow sufficient cooling time before attempting to remove or slice the cake.
FAQ
Does this cake need flour?
This version relies primarily on cornstarch rather than traditional flour, which contributes to its unusually soft and custard-like consistency.
Can I use regular yogurt?
Yes, but thick Greek yogurt works better. Regular yogurt should preferably be strained first to remove excess liquid.
Why is the center still soft after baking?
A slightly soft center is normal. The cake continues setting as it cools.
Can I make it ahead?
Yes. It is an excellent make-ahead dessert and becomes particularly easy to slice after refrigeration.
Can I add fruit?
Yes. Blueberries, raspberries, or small pieces of peach work especially well.
Should it be refrigerated?
Yes. Store leftover cake in the refrigerator because of its high yogurt and egg content.
Can I serve it warm?
You can serve it slightly warm, but the cake is much easier to cut after cooling.
Final Thoughts
Easy Custard Yogurt Cake Squares are perfect when you want a dessert that is creamy and indulgent without requiring complicated preparation. A simple mixture of yogurt, eggs, sugar, vanilla, and cornstarch transforms in the oven into a tender golden cake with a wonderfully soft center.
Let it cool, cut it into generous squares, and finish with a snowy layer of powdered sugar. The result is an easy homemade dessert that looks beautiful on the table and tastes even better after a little time in the refrigerator.